Prevalence and genetic diversity of adeno-associated viruses in bats from China
Identifieur interne : 007620 ( Main/Exploration ); précédent : 007619; suivant : 007621Prevalence and genetic diversity of adeno-associated viruses in bats from China
Auteurs : YAN LI [République populaire de Chine] ; XINGYI GE [République populaire de Chine] ; Chung-Chau Hon [France] ; HUAJUN ZHANG [République populaire de Chine] ; PENG ZHOU [République populaire de Chine] ; YUNZHI ZHANG [République populaire de Chine] ; YI WU [Australie] ; Lin-Fa Wang [Australie] ; ZHENGLI SHI [République populaire de Chine]Source :
- Journal of general virology [ 0022-1317 ] ; 2010.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Bats are increasingly being recognized as important natural reservoirs of different viruses. Adeno-associated viruses (AAVs) are widely distributed in primates and their distribution in bats is unknown. In this study, a total of 370 faecal swab samples from 19 bat species were collected from various provinces of China and examined for the presence of AAVs. The mean prevalence rate was 22.4 % (83 positives out of 370 samples), ranging from 10 to 38.9 % among different bat species. The genome sequence spanning the entire rep-cap ORFs was determined from one chosen AAV-positive sample (designated BtAAV-YNM). Phylogenetic analysis of the entire rep-cap ORF coding sequences suggested that BtAAV-YNM is relatively distant to known primate AAVs, but phylogenetically closer to porcine AAV strain Po3. Further analysis of the partial cap ORF sequences of bat AAV samples (n=49) revealed a remarkably large genetic diversity, with an average pairwise nucleotide identity of only 84.3 %. Co-presence of multiple distinctive genotypes of bat AAV within an individual sample was also observed. These results demonstrated that diverse AAVs might be widely distributed in bat populations.
Affiliations:
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<front><div type="abstract" xml:lang="en">Bats are increasingly being recognized as important natural reservoirs of different viruses. Adeno-associated viruses (AAVs) are widely distributed in primates and their distribution in bats is unknown. In this study, a total of 370 faecal swab samples from 19 bat species were collected from various provinces of China and examined for the presence of AAVs. The mean prevalence rate was 22.4 % (83 positives out of 370 samples), ranging from 10 to 38.9 % among different bat species. The genome sequence spanning the entire rep-cap ORFs was determined from one chosen AAV-positive sample (designated BtAAV-YNM). Phylogenetic analysis of the entire rep-cap ORF coding sequences suggested that BtAAV-YNM is relatively distant to known primate AAVs, but phylogenetically closer to porcine AAV strain Po3. Further analysis of the partial cap ORF sequences of bat AAV samples (n=49) revealed a remarkably large genetic diversity, with an average pairwise nucleotide identity of only 84.3 %. Co-presence of multiple distinctive genotypes of bat AAV within an individual sample was also observed. These results demonstrated that diverse AAVs might be widely distributed in bat populations.</div>
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